Endoscope base



FIG. 1 is a perspective view of an endoscope base, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a front elevational view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an endoscope base, as shown and described. 